F6902. After Blizzard. From Trail. Cloud Bank. Spruce. Pine.
MLA
McClintock, Walter, 1870-1949. F6902. After Blizzard. From Trail. Cloud Bank. Spruce. Pine.. Box 138, folder 6607. 1906 Fall. https://collections.library.yale.edu/catalog/10452294.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 138, folder 6607"])(1906 Fall)[F6902. After Blizzard. From Trail. Cloud Bank. Spruce. Pine.]. https://collections.library.yale.edu/catalog/10452294.